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ST0012UB

Needle Valve

The low-temperature and high-pressure welding needle valve adopts a fully welded valve body structure to eliminate the risk of external leakage

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    Parameter

    ○ Work pressure: Maximum 6000PSI (413bar)

    ○ Working temperature: -196 ° C (-320 ° F) to 30 ° C (86 ° F)

    ○ Applicable media: LNG, LO2, LN2, LAr, CO2

    ○ Caliber: 3mm-28mm (1/8 "-1")

    ○ Port type: Loop welding (BW butt welding, SW socket welding, UBM loop welding, threading, etc.)

    ○ Material: 304, 316, 316L, 321, Hastelloy, Monel alloy


    Performance

    ○ Integrated body forging, valve stem transmission threaded alloy structure;

    ○ The valve seat and valve core are welded with STL nickel based alloy, and the valve core has a reverse seal;

    ○ Top mounted design of valve stem packing,

    ○ All valves have undergone pressure testing;

    ○ All valves have been cleaned and meet the requirements of G-4.1 of the American Compressed ○ Gas Association, and can be used for liquid oxygen equipment;

    ○ The maximum working pressure is 69MPa, and the temperature ranges from -196℃ to 30℃


    Application

    The low-temperature and high-pressure welding needle valve is designed for extreme working conditions and is suitable for ultra-low temperature medium systems such as liquid nitrogen, liquid oxygen, LNG, etc. It adopts a fully welded valve body structure to eliminate the risk of leakage; The valve core is a precision conical needle type, achieving precise adjustment and reliable cutoff of micro flow rate; The main material is mostly low-temperature carbon steel (LCB) or austenitic stainless steel (304L/316L), which can operate stably for a long time under conditions ranging from -196 ℃ to room temperature and pressures up to PN100 or even PN250. It is widely used in the fields of air separation, energy, and chemical engineering.

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